ES2704628T3 - Composition comprising active ingredients, oil and ionic liquid - Google Patents

Abstract

A liquid composition comprising A) an organic UV absorbing active ingredient that is poorly soluble in water and sparingly soluble in oil, in dissolved form selected from hydroxyphenyltriazine compounds; - triazine compounds substituted with polyphenyl; and - 2,4,6-trianilino-p- (carbo-2'-ethylhexyl-1'-oxy) -1,3,5-triazine; B) an oil that is soluble in water at 20 ° C up to a maximum of 20 g / l selected from an aromatic hydrocarbon, an alkyl alkanoate, a fatty acid amide or a dialkyl ester of an alkyldioic acid, and C) an ionic liquid comprising a cation and an anion, wherein the cation is selected from an ammonium of formula (I) N + R 1 R 2 R 3 R 4 (I) and R 1, R 2, R 3 and R 4, independently of each other, are C 1 -C 20 alkyl and / or C1-C20hydroxyalkyl; an imidazolium of the formula (II). ** Formula ** and R5 is hydrogen or C1-C20alkyl, R6 is C1-C20alkyl, and R7 is hydrogen or C1-C20alkyl, an N-substituted pyridinium derivative; a N, N'-disubstituted pyrazolium derivative; and a guanidinium derivative; and wherein the anion is selected from a carboxylate, sulfonate, sulfate, phosphonate, phosphate, halogen, bis (trifluorosulfonyl) imide, aluminum tetrachloride, phosphorus fluoride and dicyanimide.

Description

DESCRIPTION

Composition comprising active ingredients, oil and ionic liquid

The present invention relates to a liquid composition comprising A) an organic active ingredient selected from UV absorbers, which is sparingly soluble in water and sparingly soluble in oil, in dissolved form, B) a specific oil B) which is soluble in water at 20 ° C to a maximum of 20 g / l, and C) a specific ionic liquid comprising a cation and an anion, as described below. A process for the preparation of the liquid composition is also provided, wherein the active ingredient A), the oil B) and the ionic liquid C) are brought into contact; and also the use of the ionic liquid C) to increase the solubility of the active ingredient A) in an oil B). The combinations of preferred features with other preferred features are encompassed by the present invention.

The compositions comprising active ingredient, ionic liquid and oil are generally known:

WO 2007/144286 discloses an antimicrobial composition comprising an ionic liquid comprising, as cation, an N-carboxyalkylimidazolium radical and, as an anion, an alkyl sulfonate, alkyl phosphate or alkyl carboxylate. The composition may comprise hydrocarbon oils or active antimicrobial ingredients.

Compositions comprising an organic active ingredient, an oil and an ionic liquid which can be easily produced are disclosed in WO 2004/035018 A2.

Roger R D et al: "Lonic Liquids - Solvents of the Future?", October 31, 2003, Science, American Association for the Advancement of Science, Washington, DC; US, page (s) 792-793 suggest ionic liquids as alternative solvents.

The disadvantages of the known compositions comprising the active ingredient, ionic liquid and oil are, inter alia, that the ionic liquid can only be prepared with complexity, that the addition of non-ionic or anionic surfactants is necessary, that high concentrations can not be produced. of active ingredient in solution, that the composition is relatively toxic; that the active ingredient could be chemically degraded by the ionic liquid. An objective of the present invention was to overcome these disadvantages.

The objective was reached by a liquid composition comprising

A) an active organic ingredient that is poorly soluble in water and poorly soluble in oil in dissolved form selected from UV absorbers

- hydroxyphenyltriazine compounds;

- triazine compounds substituted with polyphenyl;

2,4,6-trianilino-p- (carbo-2'-ethylhexyl-1'-oxy) -1,3,5-triazine;

B) an oil that is soluble in water at 20 ° C up to a maximum of 20 g / l selected from an aromatic hydrocarbon, an alkyl alkanoate, a fatty acid amide or a dialkyl ester of an alkyldioic acid and

C) an ionic liquid comprising a cation and an anion, wherein the cation is selected from

- an ammonium of the formula (I)

N + R1R2R3R4 (I)

and R1, R2, R3 and R4, independently of one another, are C ¹ -C ²⁰ alkyl and / or C ¹ -C ²⁰ hydroxyalkyl;

an imidazolium of the formula (II)

R 7

r5 / N ^ N ^ r6 (II)

and R 5 is hydrogen or C ¹ -C ²⁰ alkyl, R 6 is C ¹ -C ²⁰ alkyl and R 7 is hydrogen or C ¹ -C ²⁰ alkyl,

- an N-substituted pyridinium derivative;

- an N, N'-disubstituted pyrazolium derivative; Y

- a guanidinium derivative; and in which the anion is selected from

- a carboxylate,

- sulfonate,

- sulfate,

- phosphonate,

- phosphate,

- halogen,

- bis (trifluorosulfonyl) imide,

- aluminum tetrachloride,

- phosphorus fluoride and

- dicyanimide.

The active ingredient A) is an organic active ingredient. In addition to the at least one organic active ingredient A), other active ingredients may also be present. The additional active ingredients can be organic or inorganic.

The active ingredient A) is sparingly soluble in water. In most cases, it is soluble in water at 20 ° C to a maximum of 10 g / L, preferably at a maximum of 3 g / L, and in particular at a maximum of 0.5 g / L.

Active ingredient A) is poorly soluble in oil. In most cases, it is soluble in dibutyl adipate (such as Cetiol® B) at 20 ° C to a maximum of 10% by weight, preferably at a maximum of 5% by weight, and in particular at a maximum of 3% by weight.

Active ingredient A), in particular at least one active ingredient A), is present in dissolved form in the composition. The composition may also comprise other active ingredients, which may be present in dissolved or undissolved form.

The aforementioned UV absorbers can be used in mixtures with each other. Said mixtures can be used to increase UV absorption and / or photostability.

Preferably, the oil B) is soluble in water up to a maximum of 5 g / l, in particular preferably at a maximum of 1 g / l.

The oil B) in most cases preferably has a boiling point of at least 100 ° C and in particular of at least 150 ° C.

Suitable oils B) are, for example, aromatic compounds (also called aromatic hydrocarbons), alkyl alkanoates, fatty acid amides or dialkyl esters of an alkyldioic acid. Mixtures of these oils are also possible. The preferred oils are aromatic or dialkyl esters of an alkyldioic acid. Examples of aromatic compounds are benzene, toluene, xylene, naphthalene, biphenyl, o- or m-terphenyl, aromatic hydrocarbons substituted with mono- or poly-C ¹ -C ²⁰ alkyl, such as dodecylbenzene, tetradecylbenzene, hexadecylbenzene, methylnaphthalene, diisopropylnaphthalene, hexylnaphthalene or decylnaphthalene. Aromatic mixtures of technical quality in the boiling range of 30 to 250 ° C, and also mixtures of the aforementioned aromatics are also suitable. Preferred aromatics are aromatic mixtures of technical quality in the boiling range of 30 to 250 ° C.

Examples of alkyl alkanoates are the C 1 -C 40 alkyl esters of C 2 -C 40 alkanoic acids, preferably the C 1 -C 40 alkyl esters of the C 8 -C 40 alkanoic acids or the C 6 -C 40 alkyl esters of C 2 -C 40 alkanoic acids. The alkyl group or the alkanoic acid may optionally be functionalized with double bonds and / or hydroxy groups. Ethylhexyl lactate, inter alia, is adequate. Other examples of alkyl alkanoates are esters of linear C6-C24 fatty acids with linear C3-C24alcohols, esters of branched C6-C13carboxylic acids with C6-C24 fatty alcohols linear acids asters C24grasos C6-linear with branched alcohols, in particular 2-ethylhexanol, asters of hydroxycarboxylic acids with alcohols C ⁶ -C ²² linear or branched fatty, in particular Dioctyl Malate, fatty acid asters linear and / or branched with polyhydric alcohols (such as, for example, propylene glycol, dimerdiol or trimertriol) and / or Guerbet alcohols, triglycerides based on C6-Ciograsos acids, liquid mixtures of mono- / di- / triglycerides based on C6-Cisgrasos acids, esters of C6-C24 alcohols and / or Guerbet alcohols with aromatic carboxylic acids, in particular benzoic acid, esters of C ² -C i ² dicarboxylic acids with linear or branched alcohols having from 1 to 22 carbon atoms or polyols having 2 to 10 carbon atoms and 2 to 6 hydroxyl groups. Monoesters of fatty acids with alcohols having from 3 to 24 carbon atoms are also important. This group of substances is the product of the esterification of fatty acids having from 8 to 24 carbon atoms, such as, for example, capric acid, caprylic acid, 2-ethylhexanoic acid, capric acid, lauric acid, isotridecanic acid, myristic acid, acid palmitic, palmolic acid, stearic acid, isoestárico acid, oláico acid, elaídico acid, petroselínico acid, linoláico acid, elaeosteárico acid, aráquico acid, gadolaic acid, behánico acid and acid erúcico and mixtures of high technical degree of the same ones that are produced, for example, during the pressure excision of natural fats and oils, during the reduction of aldehydes from the synthesis of Roelen oxo or the dimerization of unsaturated fatty acids, with alcohols such as, for example, isopropyl alcohol, capric alcohol, caprylic alcohol, alcohol 2-ethylhexyl, caprylic alcohol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, alcohol c ethyl, palmolelic alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, linolenic alcohol, linolenyl alcohol, etherstearic alcohol, arachyl alcohol, gadolelic alcohol, behenyl alcohol, erucyl alcohol and brasidilic alcohol, and also mixtures of technical grade of the same ones that are produced, for example, during the high-pressure hydrogenation of methyl esters of technical quality based on fats and oils or aldehydes of the Roelen oxosynthesis, and also as a monomer fraction during the dimerization of unsaturated fatty alcohols.

Examples of fatty acid amides are N, N-di-Ci-Ci ² -alkyl-C ⁸ -C ²² -alkylamides, such as N, N-dimethyl decanamide, or N, N-dimethyldodecanamide.

Examples of dialkyl esters of an alkyldioic acid are the di-C ² -C ³² -alkyl esters of the C ⁴ -C ³² alkyldioic acids, preferably the di-C ² -Ci ⁸ -alkyl esters of the C ⁶ -C ⁶ alkyldioic acids. Of particular suitability are the dibutyl ester of succinic acid, the dibutyl ester of adipic acid and the dibutyl ester of phthalic acid, the dibutyl ester of adipic acid being particularly good.

The ionic liquid C) comprises a cation and an anion. Normally, the stoichiometric composition of anion and cation is selected so that the charges are neutralized. Ionic liquids per se and their preparation are generally known.

The ionic liquid C) is in most cases soluble in oil. The solubility of the oil can be determined, for example, at 20 ° C in Cetiol® B (dibutyl adipate) as oil. The ionic liquid C) is preferably soluble at least 0.01% by weight, particularly preferably at least 0.1% by weight, particularly preferably at least 1% by weight, and in particular at least 10% by weight , in Cetiol® B.

The melting point of the ionic liquid C) is in most cases below 220 ° C, preferably below 150 ° C, particularly preferably below 100 ° C, and in particular below 30 ° C. . The ionic liquid C) may comprise a plurality of different anions or different cations.

Preferably, in the formula (I), R1, R2, R3 and R4, independently of each other, are alkyl and / or hydroxyalkyl.

Particularly preferably, R 1, R 2, R 3 and R 4, independently of one another, are Ci-C ²⁰ alkyl and / or Ci-C ²⁰ hydroxyalkyl. Very particularly preferably, R1, R2, R3 and R4, independently of one another, are Ci-C8alkyl and / or Ci-C8hydroxyalkyl. Examples are tetrabutylammonium (TBA) or colinium (N, N, N-trimethyl-N-hydroxyethylammonium).

In a further form, R1, R2, R3 and R4, independently of each other, are alkyl radicals which may be substituted with heterofunctional groups, and which form aliphatic ring systems with each other. Examples are N, N-di-Ci-Ci ² -pyrrolidinium, 5-azaspiro [4,4] nonane, or N, N-dimethyl-pyrrolidinium.

Suitable cations furthermore preferably comprise an imidazolium of the formula (II)

in which

R7 is preferably H or methyl, in particular H. Examples are N-ethyl-N'-methylimidazolium (EMIM), N-methylimidazolium (MEHIM), N-butyl-N'-methylimidazolium (BMIM), N-ethyl-N '-imethylimidazolium (EEIM), Nn-propyl-N'-n-propylimidazolium (PPIM).

Preferably suitable cations comprise as an N-substituted pyridinium derivative, N-alkylpyridinium, wherein the alkyl radical is preferably a C iC i ² alkyl radical, in particular a Ci-C ⁶ alkyl radical.

Preferably, suitable cations comprise as a N, N'-disubstituted pyrazole derivative and a N, N'-dialkylpyrazolium derivative, wherein the alkyl radical is preferably a C ¹ -C ¹² alkyl radical, in particular a C ¹ radical - C ⁶ alkyl. The dialkylpyrazolium derivative may be optionally substituted with C 1 -C 4 alkyl, such as 1,2,5-trimethylpyrazolium.

Preferably, suitable cations comprise as a guanidinium derivative, guanidinium, hexamethylguanidinium, arginine cation or creatinine.

Preferred cations are an ammonium of the formula (I) and an imidazolium of the formula (II).

Particularly preferred anions are alkyl carboxylates, polyether-containing carboxylates and alkylsulfonates. In a particularly preferred additional form, the anions are alkylcarboxylates. In a particularly preferred additional form, the anions are polyether-containing carboxylates. In a particularly preferred additional form, the anions are alkylsulfonates.

Suitable carboxylates are a C ¹ -C ³⁰ alkylcarboxylate, C ¹ -C ²⁰ hydroxyalkylcarboxylate, a carboxylate containing polyether, arylcarboxylates and polycarboxylates, and mixtures thereof. The preferred carboxylates are C ¹ -C ³⁰ alkylcarboxylate, C ¹ -C ²⁰ hydroxyalkylcarboxylate and polyether-containing carboxylate.

The preferred alkylcarboxylate is a C 1 -C 32 alkylcarboxylate, such as acetate, propionate, hexanoate, 2-ethylhexanoate, heptanoate, octanoate, isononanoate, decanoate, laurate, oleic acid, palmitic acid, stearate or octadecanoate. The preferred hydroxyalkylcarboxylate is C ² -C ⁶ hydroxyalkylcarboxylate, such as glycolate, gluconate, glucoheptonate, glucuronate, glyceric acid, lactic acid, lactobionic acid, mevalonate.

Example of polyether-containing carboxylates are disclosed in WO 2008/135482, page 5, line 25 to page 6, line 20. The preferred polyether-containing carboxylate has the formula (III)

(RaO (CH2CH2O) nCH2CO2- (III)

where n has a value of 0 to 3 and Ra is a C ¹ -C ⁸ alkyl or an acetate radical;

or of the formula (IV)

Rb-O-CH2CO2- (IV)

where Rb is a C ¹ -C ¹⁸ alkyl. Rb is preferably C3-C12alkyl, in particular hexyl.

Particular preference is given to a polyether-containing carboxylate of the formula (III), wherein n has a value of 2 and Ra is a methyl (ie, [2- (2-methoxyethoxy) ethoxy] acetate).

Preferred polycarboxylates are aliphatic di- and tricarboxylates having from 2 to 32 carbon atoms, such as aconitic acid, adipic acid, aspartic acid, citric acid, fumaric acid, galactárico acid, glutamic acid, glutaric acid, oxoglutaric acid, maleic acid , malic acid, malonic acid, oxalate, sebacic acid, succinic acid, tartaric acid.

Preferred arylcarboxylates are benzoic acid, cinmic acid, hippuric acid.

Suitable alkyl sulfonates are C ¹ -C ²⁰ alkylsulfonates, in particular C ¹ -C ¹⁰ alkylsulfonates, and mixtures thereof. Examples are ethanesulfonate or octanesulfonate.

Suitable sulfates are those of the formula Rc-OSO3-, where Rc is C ¹ -C ¹⁸ alkyl or C ⁶ -C ¹² aryl, preferably C ¹ -C ⁸ alkyl or C ⁶ aryl, and mixtures thereof.

Suitable phosphates are C ¹ -C ¹⁰ dialkyl phosphates, where the two alkyl radicals can be identical or different, and mixtures thereof. Preference is given to dimethyl phosphate or dibutylphosphate.

Suitable halides are chloride, bromide or iodide, preferably chloride.

Particularly suitable ionic liquids C) are [2- (2-methoxyethoxy) ethoxy] -acetabutylammonium acetate, N-ethyl-N'-methylimidazolium acetate, N-ethyl-N'-methylimidazolium isononanoate, N-ethyl octanoate. -N'-methylimidazolium, N-ethyl-N'-methylimidazolium dibutylphosphate, N-butyl-N'-methylimidazolium acetate, N-ethyl-N'-ethylimidazolium propionate, N-propyl-N'-propylimidazolium acetate, Colloidal octanoate, tetrabutylammonium stearate.

The ionic liquids C) can be prepared by known methods. Examples have been described by Wasserscheid and Welton, Ionic liquids in synthesis, 2nd edition, 2007, Wiley-VCH, or WO 2008/135482.

The composition generally comprises from 0.5 to 90% by weight of ionic liquid C), based on the total amount of active ingredient A), oil B) and ionic liquid C). Preferably, it comprises 1 to 80% by weight, particularly preferably 1 to 40% by weight, and in particular 1 to 15% by weight, of ionic liquid C). In a further form, the composition may comprise up to 35% by weight, preferably up to 20% by weight, particularly preferably up to 10% by weight, very particularly preferably up to 5% by weight and in particular up to 3% by weight. weight, of the ionic liquid C), based on the total amount of active ingredient A), oil B) and ionic liquid C).

The weight ratio of oil B) to ionic liquid C) is in particular in the range of 50/1 to 3/1.

The composition usually comprises at least 1% by weight of active ingredient A). Preferably, it comprises at least 10% by weight, in particular at least 20% by weight, of the active ingredient A), based on the total amount of the composition. The composition may comprise up to 60% by weight, preferably up to 50% by weight, of the active ingredient A).

The composition may be present in the form of a solution or as a dispersion (in which case, preferably, oil B) and ionic liquid C) may be present in two separate phases). The active ingredient A) can be dissolved here in oil B), in ionic liquid C), or in both. In a preferred form, the composition is in the form of a solution. In a further preferred form, the composition is in the form of a dispersion.

The composition is usually in the form of a concentrate, which may comprise up to 10% by weight, preferably up to 5% by weight and in particular up to 1% by weight, of water.

The composition can be diluted with water in order, in doing so, to obtain an aqueous dispersion comprising the composition according to the invention. The aqueous dispersion may comprise at least 10% by weight of water, preferably at least 20% by weight, and in particular at least 40% by weight, of water. The aqueous dispersion can be an aqueous suspension, an aqueous emulsion or an aqueous suspoemulsion. Preferably, the dispersion is an aqueous emulsion.

The invention also relates to a process for the preparation of the liquid composition according to the invention, in which the active ingredient A), the oil B) and the ionic liquid C) are brought into contact. For this, the components can be mixed in any desired order. The process can take place at temperatures of 5 to 100 ° C.

The composition according to the invention may comprise formulation aids. Suitable formulation aids are solvents, liquid carriers, solid carriers or fillers, surfactants, dispersants, emulsifiers, wetting agents, adjuvants, solubility promoters, penetration promoters, protective colloids, adhesives, thickeners, humectants, repellents, attractants, feeding stimulants, compatibilizing agents, bactericides, antifreeze, foam inhibitors, dyes, adhesives and binders.

Suitable surfactants are compounds with surface activity, such as anionic, cationic, nonionic and amphoteric surfactants, block polymers, polyelectrolytes and mixtures thereof. Such surfactants can be used as an emulsifier, dispersant, solubility promoter, wetting agent, penetration promoter, protective or auxiliary colloid. Examples of surfactants can be found in McCutcheon's, Volume 1: Emulsifiers & Detergents, McCutcheon's Directories, Glen Rock, United States, 2008 (international edition or North American edition). The composition according to the invention can comprise any desired amount of substances with surface activity and surfactants. It may comprise 0.1 to 40% by weight, preferably 1 to 30 and in particular 2 to 20% by weight of total amount of substances with surface activity and surfactants, based on the total amount of the composition.

Suitable anionic surfactants are ammonium, alkali metal, alkaline earth salts of sulfonates, sulfates, phosphates, carboxylates and mixtures thereof. Examples of sulfonates are alkylarylsulfonates, diphenylsulfonates, alpha-olefin sulphonates, lignosulfonates, fatty acid sulfonates and oils, ethoxylated alkylphenol sulphonates, alkoxylated arylphenol sulphonates, condensed naphthalene sulfonates, dodecyl and tridecylbenzenesulfonates, naphthalene sulfonates and alkylnaphthalenes, sulfosuccinates or sulfosuccinamates. Examples of sulfates are sulfates of fatty acids and oils, of ethoxylated alkylphenols, of alcohols, of ethoxylated alcohols or of esters of fatty acids. Examples of phosphates are phosphate esters. Examples of carboxylates are alkylcarboxylates and also carboxylated alcohol or alkylphenol ethoxylates.

Suitable nonionic surfactants are alkoxylates, N-substituted fatty acid amides, amine oxides, esters, sugar-based surfactants, polymeric surfactants and mixtures thereof. Examples of alkoxylates are compounds such as alcohols, alkylphenols, amines, amides, arylphenols, fatty acids or fatty acid esters which have been alkoxylated with 1 to 50 equivalents. For the alkoxylation, ethylene oxide and / or propylene oxide, preferably ethylene oxide, may be used. Examples of N-substituted fatty acid amides are fatty acid glucamides or fatty acid alkanolamides. Examples of esters are esters of fatty acids, glycerol esters or monoglycerides. Examples of sugar-based surfactants are sorbitans, ethoxylated sorbitans, sucrose and glucose esters or alkyl polyglucosides. Examples of polymeric surfactants are homo or copolymers of vinylpyrrolidone, vinyl alcohols or vinyl acetate.

Suitable cationic surfactants are quaternary surfactants, for example, quaternary ammonium compounds with one or two hydrophobic groups, or salts of long chain primary amines. Suitable amphoteric surfactants are alkylbetaines and imidazolines. Suitable block polymers are block polymers of type A-B or A-B-A comprising blocks of polyethylene oxide and polypropylene oxide, or of type A-B-C comprising alkanol, polyethylene oxide and polypropylene oxide. Suitable polyelectrolytes are polyacids or polybasins. Examples of polyacids are alkali metal salts of polyacrylic acid or polyacid comb polymers. Examples of polybases are polyvinylamines or polyethyleneamines.

Suitable adjuvants are compounds which, in turn, have insignificant or even nil pesticidal efficacy and which improve the biological effect of compound I on the target. Some examples are surfactants, mineral or vegetable oils and other auxiliaries. You can find more examples in Knowles, Adjuvants and additives, Agrow Reports DS256, T & F Informa UK, 2006, chapter 5.

Suitable thickeners are polysaccharides (for example, xanthan gum, carboxymethylcellulose), inorganic clays (organically modified or unmodified), polycarboxylates and silicates.

Suitable bactericides are bronopol and isothiazoline derivatives such as alkylisothiazolinones and benzisothiazolinones.

Suitable antifreeze agents are ethylene glycol, propylene glycol, urea and glycerol.

Suitable foam inhibitors are silicones, long-chain alcohols and salts of fatty acids.

Suitable dyes (for example, in red, blue or green) are pigments that are poorly soluble in water and water soluble dyes. Examples are inorganic dyes (for example, iron oxide, titanium oxide, iron hexacyanoferrate) and organic dyes (for example, alizarin, azo and phthalocyanine dyes).

Suitable adhesives or binders are polyvinylpyrrolidones, polyvinyl acetates, polyvinyl alcohols, polyacrylates, biological or synthetic waxes and cellulose ethers.

In a preferred embodiment, the active ingredient A) is an active cosmetic ingredient and the compositions according to the invention are present in the form of a cosmetic formulation. Examples are creams, shampoo, hair spray, lotion. The preparation and other additional formulation aids are known to the person skilled in the art.

Cosmetic formulations, such as, for example, creams, gels, lotions, alcoholic and aqueous / alcoholic solutions, emulsions, wax / fat masses, stick preparations, powders or ointments, may also comprise, as auxiliaries and additives, surfactants. soft, superfatting agents, pearlescent waxes, consistency regulators, thickeners, polymers, silicone compounds, fats, waxes, stabilizers, deodorant active ingredients, anti-dandruff agents, film formers, numbing agents, other UV absorbers, antioxidants, hydrotropes, preservatives, insect repellents, self-tanning agents, solubilizers, perfume oils, dyes, antimicrobial agents and the like.

The superfatting agents which can be used are substances such as, for example, lanolin and lecithin, and polyethoxylated or acrylated lanolin and lecithin derivatives, fatty acid esters of polyol, monoglycerides and fatty acid alkanolamides, the latter simultaneously serving as foam stabilizers .

Suitable pearlescent waxes are, for example: alkylene glycol esters, specifically ethylene glycol distearate; fatty acid alkanolamides, specifically coconut fatty acid diethanolamide; partial glycerides, specifically monoglyceride of stearic acid; esters of polyhydric carboxylic acids, optionally substituted with hydroxy, with fatty alcohols having from 6 to 22 carbon atoms, specifically long chain esters of tartaric acid; fatty substances, such as, for example, fatty alcohols, fatty ketones, fatty aldehydes, fatty ethers and fatty carbonates, which have in total at least 24 carbon atoms, specifically laurone and distearyl ether; fatty acid such as stearic acid, hydroxystearic acid or behenic acid, ring opening products of olefin epoxies having from 12 to 22 carbon atoms with fatty alcohols having from 12 to 22 carbon atoms and / or polyols having 2 to 15 carbon atoms and 2 to 10 hydroxyl groups, and mixtures thereof.

Suitable consistency regulators are mainly fatty alcohols or hydroxylated fatty alcohols having from 12 to 22 and preferably from 16 to 18 carbon atoms, and also partial glycerides, fatty acids and hydroxylated fatty acids. Preference is given to a combination of these substances with alkyl oligoglucosides and / or N-methylglucamides of fatty acids of identical chain length and / or polyglycerol poly-12-hydroxystearates. The suitable thickeners are, for example, the Aerosil grades (hydrophilic silicas), polysaccharides, in particular xanthan gum, guar guar, agar-agar, alginates and tyloses, carboxymethylcellulose and hydroxymethylcellulose, also polyethylene glycol of relatively high molecular weight and mono and diesters of fatty acids, polyacrylates (for example, Carbopole® by Goodrich or Synthalene® by Sigma), polyacrylamides, polyvinyl alcohol and polyvinylpyrrolidone, surfactants such as, for example, glycerides of ethoxylated fatty acids, fatty acid esters with polyols such as, for example, example, pentaerythritol or trimethylolpropane, fatty alcohol ethoxylates with a reduced homologous distribution or alkyl oligoglucosides and electrolytes such as sodium chloride or ammonium chloride.

Suitable silicone compounds are, for example, dimethylpolysiloxanes, methylphenylpolysiloxanes, cyclic silicones and silicone compounds modified with amino, fatty acids, alcohol, polyether, epoxy, fluorine, glucoside and / or alkyl, which may be present at room temperature and either in liquid form or in resin form. Also suitable are simethicones, which are mixtures of dimethicones having an average chain length of 200 to 300 units of dimethylsiloxane and hydrogenated silicates. A detailed description of the volatile silicones suitable, further, by Todd et al. in Cosm. Toil. 91.27 (1976).

Suitable deodorant active ingredients are, for example, antiperspirants such as, for example, aluminum chlorohydrates (see J. Soc. Cosm. Chem. 24, 281 (1973)). Commercially available under the tradename Locron® from Hoechst AG, Frankfurt (FRG) is, for example, an aluminum hydrochloride corresponding to the formula Al ² (OH) sCl x 2.5 H ² O and whose use is particularly preferred ( See J. Pharm, Pharmacol 26, 531 (1975)). In addition to the hydrochlorides, aluminum hydroxylacetates and also aluminum / zirconium acid salts can also be used. The esterase inhibitors can be added as additional deodorant active ingredients. These are preferably trialkyl citrates such as trimethyl citrate, tripropyl citrate, triisopropyl citrate, tributyl citrate and in particular triethyl citrate (Hydagen® CAT, Henkel KGaA, Dusseldorf / FRG). The substances inhibit the enzymatic activity and, as a result, reduce the formation of odors. Other substances which are suitable as esterase inhibitors are sulfates or sterol phosphates, such as, for example, lanosterol, cholesterol, campesterol, stigmasterol and sitosterol sulfate or phosphate, dicarboxylic acids and esters thereof, such as, for example, , glutaric acid, monoethyl ester of glutaric acid, glutaric acid diethyl ester, adipic acid, monoethyl ester of adipic acid, diethyl ester of adipic acid, malonic acid and malonic acid diethyl ester, hydroxycarboxylic acids and their esters, such as, example, citric acid, malic acid, tartaric acid or dietary ester of tartaric acid. The antibacterial active ingredients, which influence the germinal flora and kill the bacteria that break down perspiration and / or inhibit its growth, can also be present in the preparations (in particular in bar preparations). Examples of these are chitosan, phenoxyethanol and chlorhexidine gluconate. 5-Chloro-2- (2,4-dichlorophenoxy) phenol has been shown to be particularly effective (Irgasan®, Ciba Specialty Chemicals Inc.).

Antidandruff agents that can be used are, for example, climbazole, octopirox and zinc pirethionite. Typical film formers are, for example, chitosan, microcrystalline chitosan, quaternized chitosan, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymers, polymers of the acrylic acid series, quaternary cellulose derivatives, collagen, hyaluronic acid or salts thereof and compounds Similar. The swelling agents that can be used for the aqueous phases are montmorillonites, clayey mineral substances, pemulen and grades of alkyl-modified carbopol (Goodrich). Other suitable polymers and / or swelling agents can be found in the general description of R. Lochhead ?? Cosm. Toil. 108, 95 (1993).

In addition to the primary photoprotective substances, it is also possible to use secondary photo-protective agents of the antioxidant type, which interrupt the photochemical reaction chain that is activated when UV radiation penetrates the skin or hair. Typical examples of such antioxidants are amino acids (eg, glycine, histidine, tyrosine, tryptophan) and their derivatives, imidazoles (e.g., urocanic acid) and derivatives thereof, peptides such as D, L-carnosine, D-carnosine, L-carnosine and derivatives thereof (e.g., anserine), carotenoids, carotenes (e.g.,? -Carotene,? -Carotene, lycopene) and their derivatives, chlorogenic acid and derivatives thereof, lipoic acid and its derivatives (eg example, dihydrolipoic acid), aurothioglycosa, propylthiouracil and other thiols (eg, thioredoxin, glutathione, cysteine, cystine, cystamine and glycosyl, N-acetyl, methyl, ethyl, propyl, amyl, butyl and lauryl, palmitoyl, oleyl ,? -linoleyl, cholesteryl and glyceryl esters thereof) and their salts, dilauryl thiodipropionate, distearyl thiodipropionate, thiodipropionic acid and its derivatives (esters, ethers, peptides, lipids, nucleotides, nucleosides and salts), and sulfoximine (for example, butionine sulfoximins, homocysteine sulfoximine, butionine sulfones, penta-, hexa-, heptaximine sulphoximine) in very low tolerated doses (for example, pmol to? mol / kg), also chelating agents (metal) (eg, fatty acids? -hydroxy, palmitic acid, phytic acid, lactoferrin),? -hydroxy acids (eg, citric acid, lactic acid, malic acid), humic acid, bile acid, bile extracts, bilirubin, biliverdin, EDTA, EGTA and derivatives thereof, unsaturated fatty acids and derivatives thereof (for example, α-linolenic acid, linoleic acid, oleic acid), folic acid and derivatives thereof, ubiquinone and ubiquinol and derivatives thereof, vitamin C and derivatives (eg, ascorbyl palmitate, Mg ascorbyl phosphate, ascorbyl acetate), tocopherols and derivatives (eg, vitamin E acetate), vitamin A and derivatives (eg, vitamin A palmitate) and benzoate d and coniferyl of benzoin resin, rutinic acid and derivatives thereof, β-glycosylrutin, ferulic acid, furfurylideneglucitol, carnosine, butylated hydroxytoluene, butylhydroxyanisole, nordihydroguajacic acid, nordihydroguaiaretic acid, trihydroxybutyrophenone, uric acid and derivatives thereof, mannose and derivatives thereof , superoxide dismutase, N- [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] sulphanilic acid (and its salts, such as, for example, sodium salts), zinc and its derivatives (for example , ZnO, ZnSO4), selenium and its derivatives (for example, selenomethionine), stilbenes and their derivatives (for example, stilbene oxide, transestilbene oxide) and the derivatives (salts, esters, ethers, sugars, nucleotides, nucleosides, peptides and lipids) suitable in accordance with the invention for these specified active ingredients. In addition, HALS compounds (= "hindered amine light stabilizers") can also be mentioned. The antioxidant fraction here is generally between 0.001 and 30% by weight, preferably between 0.01 and 3% by weight, based on the weight of the absorbent or UV absorbers.

To improve flow behavior, hydrotropes such as, for example, ethanol, isopropyl alcohol or polyols can also be used. The polyols which are suitable herein preferably have from 2 to 15 carbon atoms and at least two hydroxyl groups. The polyols can also comprise other functional groups, in particular amino groups, and / or can be modified with nitrogen. Typical examples are:

- glycerol;

alkylene glycols, such as, for example, ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, hexylene glycol and polyethylene glycols having an average molecular weight of 100 to 1,000 Daltons;

- mixtures of technical grade oligoglycerol with a degree of self-condensation of 1.5 to 10, such as, for example, mixtures of diglycerol of technical quality with a diglycerol content of 40 to 50% by weight;

- methylol compounds, such as, in particular, trimethylol ethane, trimethylol propane, trimethylol butane, pentaerythritol and dipentaerythritol;

lower alkyl glycosides, in particular those having 1 to 8 carbon atoms in the alkyl radical, such as, for example, methyl and butyl glucoside;

- sugar alcohols having 5 to 12 carbon atoms, such as, for example, sorbitol or mannitol;

- sugars having from 5 to 12 carbon atoms, such as, for example, glucose or sucrose;

- amino sugars, such as, for example, glucamine;

dialcohol amines, such as diethanolamine or 2-amino-1,3-propanediol.

Suitable preservatives are, for example, phenoxyethanol, formaldehyde solution, parabens, pentanediol or sorbic acid, and also the other classes of substances listed in Annex 6, part A and B of the Cosmetic Ordinance.

The perfume oils that may be mentioned are mixtures of natural and / or synthetic fragrances. The natural fragrances are for example, flower extracts (lily, lavender, rose, jasmine, neroli, ylang-ylang), stems and leaves (geranium, patchouli, petitgrain), fruits (anise, coriander, cumin, juniper), peels fruits (bergamot, lemon, orange), roots (mace, angelica, celery, cardamom, costus, iris, calmus), woods (pine wood, sandalwood, guaiac wood, cedar wood, rosewood), herbs and grasses (tarragon, lemongrass, sage, thyme), needles and branches (spruce, spruce, pine, dwarf pine), resins and balsams (galbanum, elemi, benzoe, myrrh, olibanum, opoponax). Also suitable are animal raw materials such as, for example, civet and castoreum. Typical synthetic fragrances are, for example, products of the ester, ether, aldehyde, ketone, alcohol and hydrocarbon type.

Fragrance compounds of the ester type are, for example, benzyl acetate, phenoxyethyl isobutyrate, p-tertiary butyl cyclohexylacetate, linalyl acetate, dimethylbenzylcarbinyl acetate, phenylethyl acetate, linalyl benzoate, benzyl formate, ethylmethyl phenylglycinate, propionate. of cyclohexyl allyl, styrallyl propionate and benzyl salicylate. The ethers include, for example, benzyl ethyl ether; aldehydes, for example, linear alkanals having 8 to 18 carbon atoms, citral, citronellal, citronellyl oxyacetaldehyde, cyclamen aldehyde, hydroxy citronellal, lilial and bourgeonal; the ketones, for example, the ionones, the isomethylionone and the methyl cedril ketone; alcohols, for example, ane-tola, citronellol, eugenol, isoeugenol, geraniol, linalool, phenylethyl alcohol and terpineol; hydrocarbons mainly include terpenes and balsams. However, preference is given to the use of mixtures of different fragrances that together produce a pleasant aroma note. Essential oils of relatively low volatility, which in most cases are used as aroma components, are also suitable as perfume oils. For example, sage oil, chamomile oil, clove oil, lemon balm oil, cinnamon leaf oil, linden flower oil, juniper berry oil, vetiver oil, frankincense oil, galbanum oil , blueberry oil and bleach oil. The use of bergamot, dihydromircenol, lilial, liral, citronellol, phenylethyl alcohol, hexylcinaldehyde, geraniol, benzylacetone, cyclamen aldehyde, linalool, boisembrene forte, ambroxan, indole, hedione, sandelice, lemon oil, mandarin oil is preferred , orange oil, allyl amyl glycollate, cyclovertal, bleach oil, sclarea sage oil,? -damascona, geranium oil bourbon, cyclohexyl salicylate, vertofix coeur, iso-E-Super, Fixolide NP, evernil, iraldein gamma, phenylacetic acid, geranyl acetate, benzyl acetate, rose oxide, romillat, irotil and floramat, alone or in mixtures.

The dyes that can be used are substances approved and suitable for cosmetic purposes, as indicated, for example, in the publication "Kosmetische Farbemittel" [Colorants for Cosmetics] of the Coloring Commission of the German Research Society, Verlag Chemie, Weinheim, 1984, pages 81 to 106. Colorants are generally used in concentrations of 0.001 to 0.1% by weight, based on the total mixture.

Typical examples of antimicrobial agents are preservatives with a specific effect against gram-positive bacteria, such as, for example, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, chlorhexidine (1,6-di (4-chlorophenylbiguanido) hexane). or TCC (3,4,4'-trichlorocarbanilide). Numerous fragrances and essential oils also have antimicrobial properties. Typical examples are the active ingredients eugenol, menthol and thymol in clove oil, peppermint oil and thyme oil. An interesting natural deodorant is the terpene alcohol farnesol (3,7,11-trimethyl-2,6,10-dodecatrien-1-ol) which is present in the linden blossom oil. Glycerol monolaurate has already proven to be useful as a bacteriostatic. In general, the fraction of additional antimicrobial agents is from 0.1 to 2% by weight, based on the solids fraction of the preparation.

In addition, the cosmetic compositions may comprise, as auxiliaries, antifoams, such as silicones, structurants, such as maleic acid, solubility promoters, such as ethylene glycol, propylene glycol, glycerol or diethylene glycol, opacifiers, such as latex, styrene / PVP copolymers or of styrene / acrylamide, complexing agents, such as EDTA, NTA, diacetic acid alanine or phosphonic acids, propellants, such as mixtures of propane-butane, N ² O, dimethyl ether, CO ² , N ² or air, called coupling and developer components as precursors of oxidation dyes, reducing agents, such as thioglycolic acid and its derivatives, thiolactic acid, cysteamine, thiomalic acid or α-mercaptoethanesulfonic acid, or oxidizing agents, such as hydrogen peroxide, potassium bromate or sodium bromate.

Suitable insect repellents are, for example, N, N-diethyl-m-toluamide, 1,2-pentanediol or insect repellent 3535; suitable self-tanning agents are, for example, dihydroxyacetone, erythrulose or mixtures of dihydroxyacetone and erythrulose.

The cosmetic formulation includes a very wide variety of cosmetic compositions. In particular, the following compositions are suitable, for example:

- Compositions for skin care, such as, for example, compositions for washing and cleaning the skin in the form of bar soaps or liquids, synthetic detergents or laundry pastes,

Bath preparations, such as, for example, liquids (foam baths, milks, shower preparations) or solid bath preparations, such as, for example, bath tablets and bath salts;

- Compositions for skin care, such as, for example, skin emulsions, multiple emulsions or skin oils;

- Decorative compositions for body care, such as facial makeup in the form of day creams or powders, facial powders (loose and pressed), blush or cream makeup, compositions for eye care, such as for example preparations for eye shadows, mascara, eyeliner, eye creams or eye makeup creams; lip care compositions, such as, for example, lipstick, lip gloss, lip liner, nail care compositions, such as nail varnish, nail varnish remover, nail hardeners or nail removers cuticles;

Foot care compositions, such as foot baths, foot powder, foot creams and balms for the feet, specifically deodorants and antiperspirants or compositions for removing calluses;

- Photoprotective compositions, such as solar milks, lotions, creams, oils, sunblocks or tropical, prebronceado preparations or preparations after the sun;

- Compositions for tanning the skin, such as, for example, self-tanning creams;

- Depigmentation compositions, such as, for example, skin whitening preparations or skin lightening compositions;

Insect repellent compositions ("repellents"), such as, for example, oils against insects, lotions, aerosols or bars;

- Deodorants, such as deodorant in sprinklers, pump sprinklers, deodorant gels, bars or roll-ons;

- Antiperspirants, such as, for example, antiperspirant sticks, creams or roll-ons;

- Compositions for the cleaning and care of stained skin, such as, for example, synthetic detergents (solids or liquids), preparations for desquamation or exfoliation or masks for desquamation;

- The compositions for depilation in chemical form (depilation), such as, for example, depilation powders, liquid depilatories, creamy or pasty depilatories, depilatories in the form of gel or aerosol foams;

- Shaving compositions, such as for example shaving soap, shaving foaming creams, non-foaming shaving creams, foams, gels, pre-shaving preparations for dry shaving, for shaving or after shaving;

- perfumed compositions, such as for example waters with essences (cologne, toilet water, perfume water, toilet perfume, perfume), perfume oils or perfume creams;

- Cosmetic compositions for hair treatment, such as, for example, hair washing compositions in the form of shampoos, hair conditioners, hair care compositions, such as, for example, pretreatment compositions, tonics for hair, hair styling creams, styling gels, ointments, hair rinses, treatment packages, intensive hair treatments, hair shaping compositions, such as, for example, corrugating compositions to produce permanent waves (wave hot, soft wave, cold wave), preparations to soften the hair, liquid compositions to fix the hair, hair foams, hair sprays, bleaching compositions, such as, for example, hydrogen peroxide solutions, shampoos to rinse, creams bleaching agents, bleaching powders, slurries or bleaching oils, temporary hair dyes, semipermanent entities or permanent, preparations with auto oxidant dyes or natural dyes for hair such as henna or chamomile. These final formulations listed may be present in a wide variety of presentation forms, such as, for example,

- in the form of liquid preparations such as W / O, O / W, O / W / O, W / O / W, PIT and all types of microemulsions, - in the form of a gel,

- in the form of an oil, a cream, milk or lotion,

- in the form of a powder, a lacquer, a tablet or make-up,

- in the form of a bar,

- in the form of a sprinkler (sprinkler with propellant gas or sprinkler with pump) or an aerosol,

- in the form of a foam, or

- in the form of a paste.

Of particular importance as cosmetic compositions for the skin here are photoprotective compositions such as solar milks, lotions, creams, oils, sunscreens or tropicals, pre-tanning preparations or after-sun preparations; also compositions for tanning the skin, such as, for example, self-tanning creams. Of particular interest here are sunscreen creams, sunscreen lotions, sunscreen oils, sun protection milk and also sunscreen preparations in the form of a sprinkler.

Of particular importance as hair cosmetic compositions herein are the compositions mentioned above for treating hair, in particular hair washing compositions in the form of shampoos, hair conditioners, hair care compositions, such as, for example, hair example, pretreatment compositions, hair tonics, hair styling creams, styling gels, ointments, hair rinses, treatment packs, intensive hair treatments, hair straightening preparations, liquid compositions for fixing hair , hair foams and hair sprinklers. Of particular interest here are the compositions for hair washing in the form of shampoos. A shampoo has, for example, the following composition: 0.01 to 5% by weight of one of the UV absorbers according to the invention, 12.0% by weight of sodium laureth-2-sulfate, 4, 0% by weight of cocamidopropyl betaine, 3.0% by weight of NaCl and water ad 100%. The invention also relates to the use of ionic liquid C) to increase the solubility of active ingredient A) in oil B). Suitable and preferred embodiments, such as oil B), ionic liquid C) and active ingredient A), are as described above. The solubility can be increased by at least 10%, preferably by 30%, particularly preferably by 100% and in particular by 500%, in each case based on the solubility in pure oil. In a further form, the solubility of active ingredient A) is increased by 10%, preferably by 30%, particularly preferably by 100% and in particular in 500%, in each case based on the linearly interpolated solubility in the respective mixture of oil B) and ionic liquid C). The linearly interpolated solubility is theoretically determined by a linear binding line between the solubility of the active ingredient A) in pure oil B) and in pure ionic liquid.

The advantages of the invention are that high concentrations of active ingredient A) can be put into solution; that the composition is only slightly toxic; that the active ingredient A) is not chemically degraded by the ionic liquid C); that the ionic liquid C) can only be prepared easily, that it has a high agrochemical effect, that very high concentrations of active ingredient A) can be put into solution, that ionic liquids C) which are solids at room temperature can be used, the compositions are only of low viscosity, that, for the same concentration of active ingredient A), less organic solvent or oil needs to be added to the composition, and that the organic solvents can be replaced by oils, in particular vegetable oils, oil esters vegetable or amides of vegetable oils.

The following examples illustrate the invention without limiting it.

Examples

Cetiol® B: Bibutyl adipate cosmetic oil, commercially available from BASF SE.

Uvinul® T150: 2,4,6-trianilino-p- (carbo-2'-ethylhexyl-1'-oxy) -1,3,5-triazine; CAS No. 88122-99-0, commercially available from BASF SE.

Tinosorb® S: bis-ethylhexyloxyphenol methoxyphenyl triazine (also known as bemotricinol).

Example 1: increased solubility of the UV absorber

The solubilities are determined at 21 ° C. For this, increasing amounts of active ingredient A) are added, step by step, to oil B) (Cetiol® B or Solvesso®), which comprises the ionic liquid C), until maximum solubility is reached. Alternatively, the oil B), which comprises the ionic liquid C), is saturated with the active ingredient and the soluble fraction of the active ingredient A) is quantified by means of HPLC.

The results are summarized in tables 1 and 2.

Table 1: Solubility [g / l] of Uvinul® T150 with Cetiol® B as oil

Table 2: Solubility [g / l] of Tinosorb® S with Cetiol® B as oil B)

Claims (11)

1. A liquid composition comprising A) an organic UV absorbing active ingredient that is sparingly soluble in water and sparingly soluble in oil, in dissolved form selected from - hydroxyphenyltriazine compounds; - triazine compounds substituted with polyphenyl; Y 2,4,6-trianilino-p- (carbo-2'-ethylhexyl-1'-oxy) -1,3,5-triazine; B) an oil that is soluble in water at 20 ° C up to a maximum of 20 g / l selected from an aromatic hydrocarbon, an alkyl alkanoate, a fatty acid amide or a dialkyl ester of an alkyldioic acid, and C) an ionic liquid comprising a cation and an anion, wherein the cation is selected from an ammonium of formula (I) N + R1R2R3R4 (I) and R1, R2, R3 and R4, independently of one another, are C ¹ -C ²⁰ alkyl and / or C ¹ -C ²⁰ hydroxyalkyl; an imidazolium of the formula (II).

and R 5 is hydrogen or C ¹ -C ²⁰ alkyl, R 6 is C ¹ -C ²⁰ alkyl, and R 7 is hydrogen or C ¹ -C ²⁰ alkyl, an N-substituted pyridinium derivative; a N, N'-disubstituted pyrazolium derivative; and a guanidinium derivative; and wherein the anion is selected from a carboxylate, sulfonate, sulfate, phosphonate, phosphate, halogen, bis (trifluorosulfonyl) imide, aluminum tetrachloride, phosphorus fluoride and dicyanimide. The composition according to claim 1, wherein the cation of the ionic liquid C) comprises an ammonium of the formula (I) or an imidazolium of the formula (II). The composition according to claim 1 or 2, wherein the weight ratio of oil B) to ionic liquid C) is in the range of 100/1 to 1/1. 4. The composition according to any one of claims 1 to 3, wherein in the formula (II) R5 is hydrogen or C ¹ -C ²⁰ alkyl, R 6 is C ¹ -C ²⁰ alkyl, and R 7 is C ¹ -C ²⁰ alkyl. The composition according to any one of claims 1 to 4, comprising at least 10% by weight of the active ingredient A). 6. The composition according to any one of claims 1 to 5, wherein the oil B) has a boiling point of at least 80 ° C. The composition according to any one of claims 1 to 6, wherein the anion of the ionic liquid C) comprises an alkyl carboxylate, a carboxylate containing polyether or alkylsulfonate. The composition according to any one of claims 1 to 7, wherein the composition is a solution or dispersion and comprises a maximum of 5% by weight of water. The composition according to any one of claims 1 to 8, wherein the composition is a dispersion and comprises at least 5% by weight of water. 10. A process for the preparation of the liquid composition according to any one of claims 1 to 9, wherein the active ingredient A), the oil B) and the ionic liquid C are contacted. The use of the ionic liquid C according to any one of claims 1 to 9 to increase the solubility of the active ingredient A) according to any one of claims 1 to 9 in an oil B) according to any one of Claims 1 to 9.